// This is the command sequence that rotates the ST7789 driver coordinate frame

writecommand(TFT_MADCTL);
rotation = m;
switch (rotation)
{
case 0: // Portrait
#ifdef CGRAM_OFFSET
	if (_init_width == 135)
	{
		colstart = 52;
		rowstart = 40;
	}
	else
	{
		colstart = 0;
		rowstart = 0;
	}
#endif
	writedata(TFT_MAD_COLOR_ORDER);

	_width = _init_width;
	_height = _init_height;
	break;

case 1: // Landscape (Portrait + 90)
#ifdef CGRAM_OFFSET
	if (_init_width == 135)
	{
		colstart = 40;
		rowstart = 53;
	}
	else
	{
		colstart = 0;
		rowstart = 0;
	}
#endif
	writedata(TFT_MAD_MX | TFT_MAD_MV | TFT_MAD_COLOR_ORDER);

	_width = _init_height;
	_height = _init_width;
	break;

case 2: // Inverter portrait
#ifdef CGRAM_OFFSET
	if (_init_width == 135)
	{
		colstart = 53;
		rowstart = 40;
	}
	else
	{
		colstart = 0;
		rowstart = 80;
	}
#endif
	writedata(TFT_MAD_MX | TFT_MAD_MY | TFT_MAD_COLOR_ORDER);

	_width = _init_width;
	_height = _init_height;
	break;
case 3: // Inverted landscape
#ifdef CGRAM_OFFSET
	if (_init_width == 135)
	{
		colstart = 40;
		rowstart = 52;
	}
	else
	{
		colstart = 80;
		rowstart = 0;
	}
#endif
	writedata(TFT_MAD_MV | TFT_MAD_MY | TFT_MAD_COLOR_ORDER);

	_width = _init_height;
	_height = _init_width;
	break;
case 4: // Inverter portrait & Mirror Y
#ifdef CGRAM_OFFSET
	if (_init_width == 135)
	{
		colstart = 53;
		rowstart = 40;
	}
	else
	{
		colstart = 0;
		rowstart = 0;
	}
#endif
	writedata(TFT_MAD_MX | TFT_MAD_COLOR_ORDER);

	_width = _init_width;
	_height = _init_height;
	break;
}
